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A kind of internal cooling three-sided edge milling cutter

A technology of three-sided edge and milling cutter, which is applied in the field of metal cutting tools, can solve the problems that the coolant is not aligned with the cutting edge, weaken the strength of the cutter body, and the cooling effect is not good, so as to improve the cooling effect, reduce the processing cost, and improve the The effect of cooling efficiency

Active Publication Date: 2020-05-05
ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two defects in this invention. First, the coolant is not aligned with the cutting edge, and the cooling effect is not good; the water guide groove is too long, which seriously weakens the strength of the cutter body and reduces the tool life.

Method used

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  • A kind of internal cooling three-sided edge milling cutter
  • A kind of internal cooling three-sided edge milling cutter
  • A kind of internal cooling three-sided edge milling cutter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as Figure 1 to Figure 6 As shown, the internally cooled three-sided edge milling cutter of this embodiment includes a cutter head 1, a blade 2 and a blade fastening assembly. Installed in the chip pocket 11, the blade fastening assembly includes a tool holder 3, a pressure block 4 and a screw rod 5, the pressure block 4 and the tool holder 3 are arranged in the chip pocket 11, the two press against each other, and the pressure block 4 passes through The external thread of the screw 5 is fixed on the cutter head 1, the blade 2 is fixed on the tool holder 3 by the screw 21, the screw rod 5 is provided with a second oil passage 51 axially penetrating through it, the cutter head 1 is provided with a ring groove 12, and the second oil The channel 51 communicates with the annular groove 12 through the first oil channel 13 provided on the cutterhead 1, and the outward end of the screw rod 5 is inserted with a plug pin 6, the plug pin 6 has an external thread, and the scr...

Embodiment 2

[0036] The internally cooled three-sided edge milling cutter of the present embodiment differs from Embodiment 1 only in that:

[0037] In this embodiment, there is no nozzle 62, and the second oil passage 51 in the screw rod 5 is a blind hole, which is closed at the outward end of the screw rod 5, and communicates with the first oil passage 13 and the annular groove 12 at the inward end, directly An auxiliary nozzle 53 is provided at the outward end of the screw rod 5 . The auxiliary jet 53 can likewise be directed towards a cutting edge of the blade 2 . But in this embodiment, the position of the auxiliary cutting edge 53 can only be fine-tuned, and the outward end of the screw rod 5 must be long enough to be sprayed onto the blade 2. This embodiment has a certain cooling effect, but it does not reach the effect of embodiment 1.

Embodiment 3

[0039] The only difference between this embodiment and embodiment 1 is:

[0040] In this embodiment, only the nozzle 62 is provided on the blocking pin 6 , and the auxiliary nozzle 53 is not provided on the screw 5 . The position of the nozzle 62 can be adjusted arbitrarily, and can better point to the blade 2, but one nozzle can only spray one cutting edge of the blade 2. This embodiment can have a better cooling effect, but the effect of the embodiment 1 cannot be reached.

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Abstract

The invention discloses an internal-cooling face and side milling cutter which comprises a cutterhead, blades and blade fastening assemblies. Multiple chip pockets are evenly distributed in the circumferential direction of the cutterhead, the blades are installed in the chip pockets through the blade fastening assemblies, the blade fastening assemblies comprise tool holders, pressing blocks and screw rods, the pressing blocks and the tool holders are clamped in the chip pockets and abut against each other in a pressing mode, the pressing blocks are fixed to the cutterhead through the screw rods, the blades are fixed to the tool holders through screws, axial-through second oil passages are formed in the screw rods, the cutterhead is provided with an annular groove, second oil passages communicate with the annular groove through first oil passages, plugging pins are inserted to the outward ends of the screw rods, the plugging pins are provided with external threads, the screw rods are provided with internal thread holes matched with the external threads, the ends, located in the internal thread holes, of the plugging pins are provided with third oil passages, the third oil passages communicate with the second oil passages, the outer surfaces of the plugging pins are provided with nozzles pointing to the blades, the nozzles communicate with the third oil passages, and the pluggingpins are locked to the screw rods through locking nuts correspondingly. The internal-cooling face and side milling cutter has the advantages that the cooling effect is good, and machined surface quality is good.

Description

technical field [0001] The invention relates to a metal cutting tool, in particular to an inner-cooled three-sided edge milling cutter. Background technique [0002] Three-side milling cutters are mostly used for milling grooves. When milling a groove, it is a closed process, and it is extremely difficult for the external coolant to enter the processing part, resulting in severe heat generation during milling, reduced blade life, and poor surface quality of the machined groove. In order to solve this problem, internal cooling technology is commonly used, and the coolant is directly delivered to the cutting edge of the knife through the cutter head. Disclosed in Chinese patent document CN206455227U is a kind of three-sided edge milling cutter with water conduction cooling function, including cutter body, through-hole disc and water guide groove. The coolant can cool the tool through the water guide groove. But there are two defects in this invention. First, the coolant is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C5/28B23C5/22
CPCB23C5/2208B23C5/28B23C2210/04
Inventor 吴火飞倪高明刘敏
Owner ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD